Home / 57,211.53-78,956.57-31,725.89

Finding the Fourth Proportional to 57,211.53, 78,956.57 and 31,725.89

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Solution

The fourth proportional to 57,211.53, 78,956.57 and 31,725.89 is: 43,784.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,211.53 : 78,956.57 = 31,725.89 : x
  2. Step 2: Convert to fraction form
    57,211.53/78,956.57 = 31,725.89/x
  3. Step 3: Cross multiply
    57,211.53x = 78,956.57 × 31,725.89
  4. Step 4: Simplify right side
    57,211.53x = 2,504,967,454.60
  5. Step 5: Solve for x
    x = 2,504,967,454.60/57,211.53
  6. Step 6: Final answer
    x = 43,784.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.